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Cushion|Natural|GIA

0.51ct D SI2 Cushion Natural Diamond

EX • D/SI2 • GIA 6117390925

Shape and cutting style on the report: Cushion modified brilliant

Certificate GIA 6117390925

Diamond specifications and retailer prices

From HK$4,840 HKD
$617 USD
As of October 31, 2026
Save HK$1,819 HKD (27%) vs most expensive(unlock to see where)
2 retailers carry this diamond
Most expensive: HK$6,660 HKD at 77 Diamonds · As of November 1, 2026
View at 77 Diamonds

About this 0.51ct natural cushion diamond

This 0.51ct natural cushion sits in the half to three-quarter carat band, graded D colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6117390925. Listed at 2 retailers as of October 31, 2026, with prices from HK$4,840 to HK$6,660, a HK$1,819 spread on the same certified stone. 77 Diamonds lists it at HK$6,660. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

0.51
Carat
D
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryGood
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6117390925
Dimensions4.78 × 4.73 × 3.07 mm
L/W Ratio1.01
Top View
4.78 mm4.73 mm0.51 ctD / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryGood
FluorescenceNone
CertificateGIA 6117390925
Side View
Table 67.0%CrownGirdle: MED-VTKPavilionCulet: NoneDepth 64.9%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 31
Current: HK$6,660 HKD|Low: HK$4,840 HKD|High: HK$8,278 HKD|Avg: HK$6,581 HKD|+2.2%
77 Diamonds
Retailer 2
Retailer 3
November 1, 2026
Retailer 2HK$4,840 HKD
77 DiamondsHK$6,660 HKD
Retailer 3HK$8,278 HKD

36 data points across 3 retailers

2 retailersHK$4,840 HKD to HK$6,660 HKD

B+
Cheapest Retailer
-
HK$4,840 HKD
$617 USD
Most Expensive
B+
77 Diamonds
CUSZWDTFHNBH · Nov 1
HK$6,660 HKD
£668 GBP
View
1 more retailer has this diamond
Prices start from HK$4,840 HKDSave up to HK$1,819 HKD

Carat Hunter is not affiliated with, endorsed by, or sponsored by any retailer listed. Retailer information is from publicly available sources and may not be current. Verify details directly with the retailer before purchasing. Return terms as we hold them. Check the retailer's own returns page before you buy.

B+
0.51ct Cushion
HK$4,840 HKD